database-host-the literal text database-host- (case sensitive) \d+a digit, repeated at least once
-the literal - (4510 / 558 / 2D16)
Negative Lookahead(?!ireland) irelandthe literal text ireland (case sensitive) \w+any word character, repeated at least once
g modifier: global. Finds all matches instead of stopping after the first
m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string